<?php

namespace app\admin\controller;

use app\common\controller\Backend;

/**
 * 省市区
 *
 * @icon fa fa-circle-o
 */
class Provinces extends Backend
{

    /**
     * Provinces模型对象
     * @var \app\admin\model\Provinces
     */
    protected $model = null;

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\Provinces;

    }

    /**
     * 读取省市区数据,联动列表
     */
    public function area()
    {
        // 获取cxselect插件传递的参数
        $province = $this->request->get('province');
        $city = $this->request->get('city');

        $where = [];

        // 根据传入参数确定查询条件
        if ($province === null) {
            // 查询省份
            $where['level'] = 'province';
            $where['pid'] = '0';
        } elseif ($province && $city === null) {
            // 查询城市
            $where['level'] = 'city';
            $where['pid'] = $province;
        } elseif ($province && $city) {
            // 查询区县
            $where['level'] = 'district';
            $where['pid'] = $city;
        } else {
            $where['pid'] = -1;
        }

        $provincelist = \think\Db::name('provinces')->where($where)->field('adcode as value,name')->select();
        $this->success('', '', $provincelist);
    }

    /**
     * 默认生成的控制器所继承的父类中有index/add/edit/del/multi五个基础方法、destroy/restore/recyclebin三个回收站方法
     * 因此在当前控制器中可不用编写增删改查的代码,除非需要自己控制这部分逻辑
     * 需要将application/admin/library/traits/Backend.php中对应的方法复制到当前控制器,然后进行修改
     */


}
